Two-stage line concentrator system



Dec. 31, 1963 J. A. HARR ETAL 3,116,375

TWO-STAGE LINE CONCENTRATOR SYSTEM Filed Oct. 26 1959 28 Shee t 1 M00 [0 H00 6 COUNTER COUNTER 1 l J. A.HARR l l INVENTORS T: N-LOWRY I I. D. NEHAMA Q y I? G- RID/N65 LL $.E.

ATTORNEY Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 2 P vTw .3 E

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Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 4 v6 XE 9 Eu E 5 V 9 1 we x5 M 0 B St 1% d M 3 kg m 1.

Dec. 31, 1963 J. A HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM ATTORNEY me XQDE 28 Sheets-Sheet 5 I. D- NEHAMA B) I? 6- RID/N65}? S- -LA'O QMAH INVENTORS T. N. LOW/P) we XEDE m6 XEDE HQ VESQR Filed 00?,- 26, 1959 Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 SheetsPSPeet '7 Filed Oct. 26, 1959 Nth IL Q N Illll l J. AHARR r A YM R G M0 m U MMMM A Mad f o /D S R m w W w 6Q Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 8 Filed Oct. 26, 1959 J. A. HARR INVENTOPS 7IN. LOWRY I. D. IVE/ AMA By I? G. R/Dl/VGER sEwaMcm ATTORNEY Dec. 31, 1963 J. A. HARR ETAL 3,116,375

TWO-STAGE LINE CONCENTRATOR SYSTEM Filed Oct. 26, 1959 28 Sheets-Sheet 9 ATTORNEY Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 10 Filed Wt. 26, 1959 Dec. 31, 1963 J. A. HARR ETAL 3,116,375

TWO-STAGE LINE CONCENTRATOR SYSTEM Filed 00*,- 26, 1959 28 Sheets-Sheet 11 k k E E E TRANS- J. A. HARR INVENTOPS IN. LOW/H 1.0. NEHAMA ATTORNEY FIG.

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Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 'Dec- 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 15 Filed Oct. 26. 1959 V f m 0 mwmmwfi AN. .r Jimew m 0 T Y m B V w Qut Dec. 31, 1963 J. A. HARR ETAL 3,116,375

TWO-STAGE LINE CONCENTRATOR SYSTEM Filed 001;. 26, 1959 28 Sheets-Sheet 16 IN ENTOIQS Q V I. D- IVE/ AMA 6 BY I? G. R/D/NGER t $.E.

A TTORNEV' Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 17 Filed Oct. 26, 1959 J. ,4- HARR P 45 YM -W RAW wmm m LNRW MAG LE s S w r V N W B W k\ b\..

ATTORNEY Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 18 Filed Oct. 26, 1959 QURMQQMQ klitm' Y A M rM m PRAW w mwmm r HLNR A 0 J.T.LP.,PM m 0 W V a w w 3 6E Dec. 31, 1963 J. A. HARR ETAL TWO-STAGE LINE CONCENTRATOR SYSTEM 28 Sheets-Sheet 19 W9 NN Filed Oct. 26, 1959 \NT& 8 $52k 8 SSE lll ll.

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8. A TWO-STAGE REMOTE TELEPHONE CONCENTRATOR SYSTEM INCLUDING A CENTRAL OFFICE, A PLURALITY OF LINES, A SMALLER PLURALITY OF LINKS, A STILL SMALLER PLURALITY OF TRUNKS, A PRIMARY CONCENTRATOR FOR CONNECTING SAID LINES TO SAID LINKS, A SECONDARY CONCENTRATOR FOR CONNECTING SAID LINKS TO SAID TRUNKS, SAID CONCENTRATORS INCLUDING CROSSPOINT NETWORK SWITCHES, REMOTE NETWORK CONTROL MEANS AT SAID CENTRAL OFFICE FOR TRANSMITTING CONTROL SIGNALS TO SAID REMOTE CONCENTRATORS TO OPERATE PARTICULAR CROSSPOINTS TO SELECT PARTICULAR CHANNELS THERETHROUGH SAID REMOTE NETWORK CONTROL MEANS BEING ADAPTED TO TRANSMIT SAID CONTROL SIGNALS SIMULTANEOUSLY TO SAID REMOTE PRIMARY CONCENTRATOR AND SAID REMOTE SECONDARY CONCENTRATOR, AND MEANS AT SAID REMOTE SECONDARY CONCENTRATOR RESPONSIVE TO THE CLOSURE OF A CROSSPOINT THEREAT FOR TRANSMITTING A SIGNAL INDICATIVE THEREOF TO SAID CENTRAL OFFICE. 